NJM2247BM NJR, NJM2247BM Datasheet - Page 9

• Manufacturer Part Number: NJM2247BM
• Description: IC VIDEO COLOR SUPRIMPOSER 20DMP
• Manufacturer: NJR
• Type: Signal Superimposerr

Specifications of NJM2247BM

• Applications: Video Players
• Mounting Type: Surface Mount
• Package / Case: 20-DMP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

■ INFORMATIONS
(Y, R – Y, B - Y) signals control by ten control pins.
1. Color Superimpose
2. Burst Flag Insertion
3. C Inversion
4. Y Inversion
■ APPLICATION NOTES
Ver.2004-02-17
Following four points are the outstanding function of the NJM2247A / B. These functions are to go through three input
I / O Explanation
• Supply Voltage
• Input Signals
• Output Signals
DC level of each equivalent colors shall be supplied to Y, R – Y and B – Y inputs.
The color phase of the picture shall be inverted for one hundred and eighty degrees. The color phase of the imposed
150 mV burst flag shall be added to R – Y, B – Y input signals.
Burst flag is selected by the NTSC / PAL switch.
character shall not be altered. This function shall be proceeded when inverting the burst flag, and at the same time,
the imposed character level shall be inverted too.
It is the brightness level inversion. The imposed character color shall not be changed. This function shall be
proceeded the switching Y signal output to the inverter side.
R – Y
GND
R - Y
B - Y
B - Y
V
Y
Y
+
0.7V
1.0V
0.7V
0.7V
1.0V
0.7V
5V
P - P
P - P
P - P
P - P
P - P
P - P
Fig.1 Video Camera Application
17
11
2
8
6
1
9
7
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